Sylvania



(No Model.)

G. H. PERKINS &.C-. E. TRANSOM IMPLEMENT FOR INSERTING BUNGS .IN CANS.

Patented Dec. 28

Am v 1 d 0% 0 niiiilig. v 5 Fix/2W5; AN Z 5 k 3 M 0 r w N d 4 WlTNESSES NITED STATES 'ATENT FFICE.

GEORGE E. PERKiNs AND GEORGE E. TRANSOM, OFPHILADELPHIA, PENN- SYLVANIA; SAID TRANSOM ASSIGNOR TO SAID PERKiNs.

IMPLEMENT FO R INSERTING BUNGS IN CANS.

SPECIFICATION forming part of Letters Patent No. 355,204, dated December 28, 1886.

Applicaiionfiled May 17, 1886. Serial No. 202,398. (No model.)

to of a suitable tool for applying within the bunghole of a can such a concavo-convex or cupshaped sheet-metal bung, the rim or edge, of which is provided with an outwardly-projecting flange, as is set forth in an application for patent executed by the said George H. Perkins contemporaneously with this application and contcmporaneouslyfiled.

For a better understanding of our present invention the following explanation of the said O bung, to the insertion of which it is to be applied, is in point.

A, Fig. 12, represents a can-bung hole or orifice, preferably circular in outline, and circumscribed by a channel or bead, a, the convexityof which faces the interior of the can, and the inner member of which is an up wardly-angled lip, a

B is a saucer-shaped convex-bottomed cap or bung which is struck up by dies, or otherwise conveniently formed, from sheet-lead or other inelastic, pliant, flexible, or extensible sheet metal. The cap, as originally struck, is formed with sides or walls 6 of a predetermined depth, preferably correspondent With 5 the breadth of the lip of the bead of the bunghole, and with a circumferentially-extending outwardly-projecting flange, b The exterior diameter of the cap or bung is such as to adapt it to fit snugly into the bung-hole, as shown in said Fig. 12. In order to affix the said bung in place after the can has been filled it is necessary first to drop it into the bung-hole, after the manner represented in Fig. 12, and then to bend the flange of thercap over into the channel or bead surrounding the bung-hole, so as to cause it to lie flat against the upper surfaces of the'lip, then to force the walls of the bung circumferentially outward, so as to draw up or take the bulge out of the convex bottom of the bung and cause said walls to rest closely in contact with the under surfaces \been removed.

of the lip, so that the latter is upon both of its faces or surfaces embraced by the metal of the bung, which forms a circumferential fold embracing it, as clearly represented in Fig. 7. 5 5

The foregoing bung, as stated, is not herein claimed, it forming the subject-matter of the said application of thesaid George H. Per kins referred to.

The above-described manipulation of the metal of the bung for its permanent application to the can can be readily and inexpensively accomplished by the implement which forms the subject-matter of this application,

and a good form of a convenient embodiment of which is represented in the accompanying drawings, and herein described, the particular subject-matter claimed as novel being hereinafter definitely specified.

In the drawings, Figure 1 is aside elevation of a tool conveniently embodying our improvements. Fig.2 is a side elevation of the bithead and bit removed from the roller-head. Fig. 3 is an under plan of the bit-head and bit, section being supposed through the bit in the plane of the dotted line 3 8 of Fig. 2, and sight being taken in the direction of the arrows upon said line. Fig. 4. is a top plan view of the roller-head from which the bit has tion through the roller-head in the plane of the dotted line 5 5 of Fig. 9. Fig. dis a bottom plan view of the roller-head in the position which the rollers assume when expanded.

Fig. 5 is a transverse top sec-. 3

Figs. 7 and 8 are fragmentary sectional eleva- 8 tional details exhibiting the compressing-ring and one of the rollers inthe action of the said parts upon the bungin Fig. 8 before compressiou and in Fig. 7 after it. Fig. 9 is a central vertical sectional elevation through the rollerhead, taken in the plane of the dotted'l'ne w w of Fig. 4. Figs. 10 and 11 are respectively a side'and an inside edge elevation of one of the cam-arms and its roller. Fig. 12 is a sectional View of the can'bung of the said Per- 5 kins, which it is the object of our invention to apply to the bung-hole represented.

Generally stated, our invention comprehends a rotatable tool provided with a compressing-ring adapted to press the flange of the bung down against the upwardlyangled,

or, if desired, flat lip of the bung-hole, and

also provided with a series of rolls controlled to be outwardly expanded, so as to force the walls of the bung outwardly beneath the lip of the bung-hole, the entire-implement being conveniently adapted to be rotated by a brace or other suitable contrivance. O is what we term the rollerhead, the same being a tubu} lar body, the bore of which is designated 0.

Slotted radially outward from the bore are a series of longitudinal ways or seats, each adapted to contain a roller-provided cam-arm, D, all of which latter are preferably of the length of the head, conveniently pivoted, at d, at their upper extremities within the longitudinal seats, upon the inside faces of their lower extremities provided with cam-surfaces (1", extended beyond the under face of the head 0, and provided with suitably swiveled or pivoted rollers, (1 Each of these cam-arms, conveniently maintained in position by the piv' ots d at their upper ends, is pressed inward toward a common center by a spring, a", seated in a suitable recess formed in the walls of the roller-head.

Surrounding the lower extremity of the roller-head is a compressing-ring, E,the lower portion of which is formed as an outwardly-' flaring or other suitably-formed lip, 6, projecting beyond the lower face of the head and encompassing in the mounting of the parts the rollers d. This ring is rotatable with respect to the roller-head conveniently by being provided with r a lateral outwardly-projecting flange, e beneath which engage hooked keepers F, secured to the roller-head conveniently by being fastened against an external ring, 0 removably applied to the head.

G is a bithead, conveniently of the form shown in Fig. 2, adapted to be rotated by a brace, H, or other suitable means.

9 is the bit, formed with a conical nose, 9", and having longitudinal slots 9 which, when the bit is introduced within the roller-head, receive such portions of the cam-arms as project from their seats 0*. In the mounting of the parts the conical nose of the bit centers within the cam-surfaces of the cam arms, as shown in Fig. 9.

. The bithead and its bit are capable of a limited movement, end for end, within the roller-head, the limitation being effected and retraction prevented by a set-screw, I, Fig. 1, which passes through the walls of the roller head and enters a longitudinal slot, 9, Fig. 2, formed in the walls of the bit.

9' are pockets formed verticallyin the bithead G, to contain spiral springs 9 to abut against the upper surface of the roller-head and normally maintain the bit at the full range of its upward movement within the rollerhcad. These springs may, however, be omitted, they being devices of convenience.

Such being a description of a'good form of construction of our device, its operation will be'readily understood. Normally, the bithead being maintained by the springs g apart from the roller-head, the stress of the springs c is such as to maintain the cam-arms D together at their lower extremity, so that the rollers d are retracted or as close to the axis of the roller-head as possible. In this posi' tion, as stated, the conical nose'of the bit simply reposes upon the cam-surfaces.

The bung being inserted in the bung-hole, as shown in Fig. 12, the tool is placed upon it, as shown in Figs. 8 and 9, so that the retracted rollers but just enter within the walls of the bung and the compressing-ring but just rests upon the edge of the flange of said bung. Initial pressure being exerted downwardly upon the tool, the compressing-ring forces the flange of the bung down against the lip of the bung-hole, the rollers descending along the wall of the-bung. Furtherpressure forces the nose of the bit against the cam-sur: faces of the cam-arms, so as to drive them ra dially outward, and, rotation being simultaneously imparted to said tool, the rollers are caused to force the walls of the bung outward against the under faces of the lip of the bunghole and to roll the metal of said walls closely against said lip, the compressing-ring in the then position ofparts resisting the outward thrustof said extended and rotating rollers and holding the flange of the bung and the lip of the bung-hole rigidly against the outwardly-extended walls of the bung. or two of the implement suffices to effectuate a smooth and tight joint, such as is represented in Fig. 7. Retraction is effected by raising the bit-head,in order to withdraw the nose of the bit from its contact with the camsurfaces of the cam-arms and permit the previously compressed-springs 0" to expand "and force the cam-arms and their rollers inward and away from the seam formed in the bung.

It is obvious that flat springs, rubber cushions, or similar contrivances may be resorted to in the stead of the spiral springs represented, that the pivoting of the cam-arms may be dispensed with, and that various changes in the form and relative disposition of the parts be resorted to without departure from the invention.

It it also obvious that while we have represented but three rollers, the device would be operative with but a single roller and cam-arm, with two, or with more than three-the number employed not being of the essence of the invention. \Vhen employed with a'can the bung-holeof which has a flat lip, the compressing-ring is to be correspondingly formed as to its acting-edge.

Having thus described our invention, we claim and desire to secure by LettersIatent- 1. In combination with a rotatable rollerhead provided with a compressing-ring, a se ries of rollers adapted to be together rotated by the head and to be radially expanded with respect to said compressing-ring, substantially as set forth.

2. In combination with a rotatable roller- A turn head provided witha compressing-ring, aseries ofrollers adapted to be together rotated by the head and to be radially expanded with .respect to said compressing-ring, ,and a bit for expanding said rollers and occasioning the rotation of the roller-head, substantially as set forth.

3. In a tool of the class recited, the combination of the roller-head, the compressing.- ring, the roller-provided cam-arms adapted to the head, and the conical or cam-nosed bit,.

substantially as set forth.

4. In a tool of the class recited, the combination of the roller-head, the compressingring, the roller-provided camarms adapted to the head, springs for thrusting the cam-arms radially inward, and the conical or cam-nosed bit, substantially as set forth.

5. In a tool of the class recited, the combination of the roller-head, the compressingring, the roller-provided cam-arms, springs for forcing said cam-arms radially inward, the

conical or cam-nosed bit, and means for permitting a limited longitudinal movement of the bit with respect to the roller-head, sub stantially as set forth.

6. In a tool of the class recited, the rotatable lip-provided compressing-ring, the rollerprovided cam-arms set within Ways in the GEORGE H. PERKINS. cno. E. TRANSOM.

In presence of- J. BONSALL TAYLOR WM. 0. STRAWBRIDGE.

It is hereby certified that in Letters Patent No. 355,204, granted December 28, 1886, upon the application of George Perkins and George E. Transom, of Philadelphia, Pennsylvania, for an improvement in Implements for Inserting Bungs in Cans, an error appears in the printed specification requiring correction, as follows: In lines 91 and 92, page 1, the reference letters 0 it) should be stricken out and the figures 9 9, inserted instead; and that the Letters Patent should be read. with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed, countersigned, and sealed this llth day of January, A. D. 1887.

[SEAL] D. L. HAWKINS,

Acting Secretary of the Interior.

Oountersi gn ed R. B. VANCE,

Acting Commissioner of Patents. 

